HELP! 13th Party Ideas, ASAP!

My thirteen party is in 2 weeks. I am a total girly girl and can`t decide to invite my soccer team and school friends which is a total of 16 ppl, but i think i should not invite soccer teammates now. What do you think??? I also can`t decide to do Beauty(makeovers,manicures,etc.) or a tradiotional sleepover. Theme/Ideas are suggested! It is an ALL GIRLS SLEEPOVER! I want it to be special and a night to rember, hope you can help!!! Thankss!